
\begingroup
\centering
\begin{tabular}{lcccccc}
   \toprule
    & \multicolumn{3}{c}{\makecell{Patents \\ per 1,000 people \\ (mean = 1.05, sd = 1.73)}} & \multicolumn{3}{c}{\makecell{Breakthrough patents \\ per 1,000 people \\ (mean = 0.13, sd = 0.28)}}\\
\cmidrule(lr){2-4}  \cmidrule(lr){5-7}
                              & (1)           & (2)           & (3)           & (4)           & (5)           & (6)\\  
   \midrule 
   Surname diversity          &               &               & 1.025$^{***}$ &               &               & 0.161$^{***}$\\   
                              &               &               & (0.222)       &               &               & (0.031)\\   
   Log distinct surnames      & 0.995$^{***}$ & 1.218$^{***}$ & 0.354$^{***}$ & 0.051$^{**}$  & 0.065$^{*}$   & -0.071$^{**}$\\   
                              & (0.122)       & (0.119)       & (0.114)       & (0.022)       & (0.036)       & (0.030)\\   
   Surname dispersion         &               & 0.335$^{***}$ & 0.052         &               & 0.020         & -0.025\\   
                              &               & (0.091)       & (0.063)       &               & (0.024)       & (0.016)\\   
   Population                 & 0.747$^{***}$ & 0.765$^{***}$ & 0.708$^{***}$ & 0.109$^{***}$ & 0.110$^{***}$ & 0.101$^{***}$\\   
                              & (0.187)       & (0.195)       & (0.186)       & (0.031)       & (0.031)       & (0.029)\\   
    \\
   County fixed effects       & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$\\   
   State-Period fixed effects & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$\\   
   County-specific linear trends    & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$  & $\checkmark$\\   
   Observations               & 21,984        & 21,983        & 21,983        & 21,984        & 21,983        & 21,983\\  
   \bottomrule
\end{tabular}
\par\endgroup


